Delfield Meridian MFR1-G Service And Installation Manual page 11

MAINTENANCE
CONTINUED
The power must be turned off and disconnected
whenever performing maintenance or repair
functions.
Cleaning the Condenser Coil
The condenser coil requires regular cleaning, recommended is every
90 days. In some instances though you may find that there is a large
amount of debris and dust or grease accumulated prior to the 90
day time frame. In these cases the condenser coil should be cleaned
every 30 days.
If the build up on the coil consists of only light dust and debris the
condenser coil can be cleaned with a simple brush, heavier dust build
up may require a vacuum or even compressed air to blow through the
condenser coil.
If heavy grease is present there are de-greasing agents available
for refrigeration use and specifically for the condenser coils. The
condenser coil may require a spray with the de-greasing agent and
then blown through with compressed air.
Failure to maintain a clean condenser coil can initially cause high
temperatures and excessive run times, continuous operation with
dirty or clogged condenser coils can result in compressor failures.
Neglecting the condenser coil cleaning procedures will void any
warranties associated with the compressor or cost to replace the
compressor.
Never use a high pressure water wash for this cleaning procedure
as water can damage the electrical components located near or at
the condenser coil.
Removable Refrigeration Package
The refrigeration package is removable on all Meridian Series units.
1. Disconnect power.
2. Remove the thermometer bulb.
3. Remove the front shroud.
4. Disconnect the electrical harness and remove the hold down
screws.
5. Lift package as straight up as possible so as not to damage the
gasket seal.
6. Keep package upright at all times.
Installation of Refrigeration Package
1. To avoid seal damage, do not slide package into place, carefully
set package into locator brackets.
2. Install and tighten all hold down screws.
If your freezer seems to vibrate excessively when the compressor
is running, loosen (but do not remove) the bolts on the compressor.
Semi hermetic models should be loosened before operating.
Heated Storage Cabinets
The heater ducts on heated cabinets are removable for cleaning.
When the ducts is sufficiently cool, remove the thumb screws and
pull it away from the top of the cabinet. Reverse this procedure to
re-install the ducts.
Meridian Series
W AR E
Gasket Maintenance
Gaskets require regular cleaning to prevent mold and mildew build up
and also to keep the elasticity of the gasket. Gasket cleaning can be
done with the use of warm soapy water. Avoid full strength cleaning
products on gaskets as this can cause them to become brittle and
prevent proper seals. Also, never use sharp tools or knives to scrape
or clean the gasket which could possibly tear the gasket and rip the
bellows.
Gaskets can easily be replaced and do not require the use of tools or
authorized service persons. The gaskets are "Dart" style and can be
pulled out of the grove in the door and new gaskets can be "pressed"
back into place.
Doors/Hinges
Over time and with heavy use the hinges may become loose. If it is
noticed that the door is beginning to sag, it may become necessary
to tighten the screws that mount the hinge brackets to the frame of
the unit. If the doors are loose or sagging this can cause the hinge to
pull out of the frame which may damage both the doors and the door
hinges. In some cases this can require qualified service agents or
maintenance personnel.
Drain Maintenance
Each unit has a drain located inside the unit which removes the
condensation from the evaporator coil and evaporates it at an
external condensate evaporator pan. Each drain can become loose
or disconnected from moving or bumping the drain. If you notice
excessive water accumulation on the inside of the unit be sure
the drain tube is connected from the evaporator housing to the
condensate evaporator drain pan. If water is collected underneath
the unit you may want to check the condensate evaporator drain tube
to be sure it is still located inside the drain pan. The leveling of the
unit is important as the units are designed to drain properly when
on a level surface, if your floor is not level this can also cause drain
problems. Be sure all drain lines are free of obstructions, typically
food product is found blocking drain lines causing water to back up
and overflow the drain pans.
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
Reach-Ins Service and Installation Manual
®
Never operate a heated cabinet without all heater
ducts in place!
The interior of heated storage cabinets will be hot
for some time after the power is turned off. Avoid
touching the interior walls and heater ducts with
bare hands or arms until you are certain the unit has
cooled. The use of gloves is recommended.
11